Shrubs, more than 0.5 m tall; branches ± spreading. Stems 4-lined and ancipitous when young, soon terete; internodes 0.6-3.5 cm, shorter than to exceeding leaves. Leaves sessile or subsessile; blade oblong to elliptic or obovate, 1-2.7(-3) × 0.5-1(-1.3) cm, subleathery, abaxially paler but not glaucous; laminar glands dots, prominent; abaxial glands absent; main lateral veins 1-paired, upper laterals forming distinct intramarginal vein, tertiary reticulation nearly invisible; base cuneate to angustate, apex acute. Inflorescence 1-3-flowered, terminal, sometimes with 1-flowered short subsidiary branches from up to 3 nodes below, the whole short cylindric; bracts leaflike; bracteoles narrowly elliptic or elliptic-lanceolate, persistent. Pedicels ca. 1 cm. Flowers 4-6 cm in diam., stellate; buds narrowly ovoid-pyramidal, apex acute. Sepals very slightly connate, spreading in flower, reflexed in fruit, linear-lanceolate to linear, 3.5-5(-8) × 0.7-1.2(-2) mm, laminar glands streaks and dots, margin entire, apex subacute to rounded. Petals bright yellow, obovate, 2-2.8 × 1-2 cm, 3.5-6 × as long as sepals, margin entire, eglandular, apiculus short. Stamen fascicles each with ca. 15 stamens, longest 1.2-1.6 cm, ca. 0.6 × as long as petals. Ovary narrowly ovoid-ellipsoid, 2.5-3(-5) × ca. 1.5 mm; styles 1.05-1.2(-1.5) cm, ca. 4 × as long as ovary; stigmatic mass capitate. Capsule narrowly ovoid to cylindric, 7-9 × 3-4 mm. Seeds dark yellow-brown, 1.2-1.4 mm, with partial or entire narrow wing; testa linear-reticulate. Fl. Jun-?Jul, fr. Aug-Sep.
Open limestone rock crevices; 1400-2400 m. E Taiwan (Hualian).